2197 ssize_t generic_file_buffered_read(struct kiocb *iocb,  in generic_file_buffered_read()  argument
2200 	struct file *filp = iocb->ki_filp;  in generic_file_buffered_read()
2204 	loff_t *ppos = &iocb->ki_pos;  in generic_file_buffered_read()
2227 	if (written && (iocb->ki_flags & IOCB_WAITQ))  in generic_file_buffered_read()
2228 		iocb->ki_flags |= IOCB_NOWAIT;  in generic_file_buffered_read()
2245 			if (iocb->ki_flags & IOCB_NOIO)  in generic_file_buffered_read()
2255 			if (iocb->ki_flags & IOCB_NOIO) {  in generic_file_buffered_read()
2269 			if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2275 								iocb->ki_waitq);  in generic_file_buffered_read()
2277 				if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_buffered_read()
2370 		if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2375 			error = lock_page_async(page, iocb->ki_waitq);  in generic_file_buffered_read()
2397 		if (iocb->ki_flags & (IOCB_NOIO | IOCB_NOWAIT)) {  in generic_file_buffered_read()
2421 			if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2426 				error = lock_page_async(page, iocb->ki_waitq);  in generic_file_buffered_read()
2515 generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)  in generic_file_read_iter()  argument
2523 	if (iocb->ki_flags & IOCB_DIRECT) {  in generic_file_read_iter()
2524 		struct file *file = iocb->ki_filp;  in generic_file_read_iter()
2530 		if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_read_iter()
2531 			if (filemap_range_has_page(mapping, iocb->ki_pos,  in generic_file_read_iter()
2532 						   iocb->ki_pos + count - 1))  in generic_file_read_iter()
2536 						iocb->ki_pos,  in generic_file_read_iter()
2537 					        iocb->ki_pos + count - 1);  in generic_file_read_iter()
2544 		retval = mapping->a_ops->direct_IO(iocb, iter);  in generic_file_read_iter()
2546 			iocb->ki_pos += retval;  in generic_file_read_iter()
2560 		if (retval < 0 || !count || iocb->ki_pos >= size ||  in generic_file_read_iter()
2565 	retval = generic_file_buffered_read(iocb, iter, retval);  in generic_file_read_iter()
3357 generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)  in generic_file_direct_write()  argument
3359 	struct file	*file = iocb->ki_filp;  in generic_file_direct_write()
3362 	loff_t		pos = iocb->ki_pos;  in generic_file_direct_write()
3370 	if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_direct_write()
3400 	written = mapping->a_ops->direct_IO(iocb, from);  in generic_file_direct_write()
3430 		iocb->ki_pos = pos;  in generic_file_direct_write()
3565 ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in __generic_file_write_iter()  argument
3567 	struct file *file = iocb->ki_filp;  in __generic_file_write_iter()
3584 	if (iocb->ki_flags & IOCB_DIRECT) {  in __generic_file_write_iter()
3587 		written = generic_file_direct_write(iocb, from);  in __generic_file_write_iter()
3598 		status = generic_perform_write(file, from, pos = iocb->ki_pos);  in __generic_file_write_iter()
3618 			iocb->ki_pos = endbyte + 1;  in __generic_file_write_iter()
3630 		written = generic_perform_write(file, from, iocb->ki_pos);  in __generic_file_write_iter()
3632 			iocb->ki_pos += written;  in __generic_file_write_iter()
3653 ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in generic_file_write_iter()  argument
3655 	struct file *file = iocb->ki_filp;  in generic_file_write_iter()
3660 	ret = generic_write_checks(iocb, from);  in generic_file_write_iter()
3662 		ret = __generic_file_write_iter(iocb, from);  in generic_file_write_iter()
3666 		ret = generic_write_sync(iocb, ret);  in generic_file_write_iter()